Tests: Assert unsupported global styles REST requests.

Replace empty create and delete test stubs with assertions that unsupported requests return `rest_no_route`. Verify the existing global styles item accepts `GET` before checking `DELETE`.

Developed in: #14150

Props shailu25.
See #66073.


git-svn-id: https://develop.svn.wordpress.org/trunk@64289 602fd350-edb4-49c9-b593-d223f7449a82

Author: lancewillett

tests/phpunit/tests/rest-api/rest-global-styles-controller.php

@@ -589,10 +589,17 @@ public function test_get_item() {
 	}
 
 	/**
-	 * @doesNotPerformAssertions
+	 * Global styles has no collection create route; create requests should not match a route.
+	 *
+	 * @ticket 66073
 	 */
 	public function test_create_item() {
-		// Controller does not implement create_item().
+		wp_set_current_user( self::$admin_id );
+
+		$request  = new WP_REST_Request( 'POST', '/wp/v2/global-styles' );
+		$response = rest_get_server()->dispatch( $request );
+
+		$this->assertErrorResponse( 'rest_no_route', $response, 404 );
 	}
 
 	/**
@@ -767,10 +774,22 @@ public function test_update_item_with_custom_block_style_variations() {
 	}
 
 	/**
-	 * @doesNotPerformAssertions
+	 * Global styles item route is not deletable; delete requests should not match a route.
+	 *
+	 * @ticket 66073
 	 */
 	public function test_delete_item() {
-		// Controller does not implement delete_item().
+		wp_set_current_user( self::$admin_id );
+
+		$route = '/wp/v2/global-styles/' . self::$global_styles_id;
+
+		$response = rest_get_server()->dispatch( new WP_REST_Request( 'GET', $route ) );
+		$this->assertSame( 200, $response->get_status() );
+
+		$request  = new WP_REST_Request( 'DELETE', $route );
+		$response = rest_get_server()->dispatch( $request );
+
+		$this->assertErrorResponse( 'rest_no_route', $response, 404 );
 	}
 
 	/**